var header_animation = false;
var active_index;
var header_count = 0;
var header_play = 1;
var header_time = 15000;

$(document).ready(function()
{

	header_count = $('.header_image').length;
	if(header_count > 0)
	{
		ShowHeader(0);
	}
	setTimeout(ChangeHeader, header_time);
});

function ChangeHeader()
{
	var new_index = parseInt(active_index) + 1;
	
	if(new_index == header_count)
	{
		new_index = 0;
	}
	ShowHeader(new_index);
	setTimeout(ChangeHeader, header_time);
}


function ShowHeader(index)
{
	if(active_index != index && header_animation == false)
	{
		header_animation = true;
		active_index = index;
			
		var image= $('.header_image')[index];
		var old = $('.header_image:visible');
		
		//$(image).css('z-index', 0);
		$(old).fadeOut(700);
		$(image).fadeIn(1000, function()
		{
			header_animation =false;
		});


		if(old.length == 0)
		{
			header_animation = false;
		}
		
	}
}